Question

membrane transport
a cell with a semipermeable membrane containing 14% nacl, 9% glucose and 10% albumin is suspended in a solution with the following composition: 10% nacl, 10% glucose and 40% albumin. assume membrane is permeable to all substances except albumin. identify the correct event in the answer blanks
a moves into the cell
b moves out of the cell
c does not move
14 glucose
15 albumin
16 nacl

Explanation:

Step1: Analyze glucose movement

The cell has 9% glucose and the solution has 10% glucose. Since the membrane is permeable to glucose and there is a higher - concentration of glucose outside the cell, glucose will move into the cell (A).

Step2: Analyze albumin movement

The membrane is impermeable to albumin. So albumin does not move (C).

Step3: Analyze NaCl movement

The cell has 14% NaCl and the solution has 10% NaCl. Since the membrane is permeable to NaCl and there is a higher - concentration of NaCl inside the cell, NaCl will move out of the cell (B).

Answer:

1. A. Moves into the cell
2. C. Does not move
3. B. Moves out of the cell